Add gentoo rc script (for /lib64/rc/net on eg amd64)

ndhc.sh

@@ -0,0 +1,92 @@
+# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
+# All rights reserved. Released under the 2-clause BSD license.
+
+ndhc_depend()
+{
+	program start /sbin/ndhc
+	after interface
+	provide dhcp
+}
+
+_config_vars="$_config_vars dhcp ndhc"
+
+ndhc_start()
+{
+	local args= opt= opts= pidfile="/var/run/ndhc-${IFACE}.pid"
+	local sendhost=true
+
+	eval args=\$ndhc_${IFVAR}
+
+	# Get our options
+	eval opts=\$dhcp_${IFVAR}
+	[ -z "${opts}" ] && opts=${dhcp}
+
+	# # Map some generic options to ndhc
+	# for opt in ${opts}; do
+	# 	case "${opt}" in
+	# 		nodns) args="${args} --env PEER_DNS=no";;
+	# 		nontp) args="${args} --env PEER_NTP=no";;
+	# 		nogateway) args="${args} --env PEER_ROUTERS=no";;
+	# 		nosendhost) sendhost=false;
+	# 	esac
+	# done
+
+	# [ "${metric:-0}" != "0" ] && args="${args} --env IF_METRIC=${metric}"
+
+	ebegin "Running ndhc"
+
+	case " ${args} " in
+		*" --quit "*|*" -q "*) x="/sbin/ndhc";;
+		*) x="start-stop-daemon --start --exec /sbin/ndhc \
+			--pidfile ${pidfile} --";;
+	esac
+
+	case " ${args} " in
+		*" --hostname="*|*" -h "*|*" -H "*);;
+		*)
+			if ${sendhost}; then
+				local hname="$(hostname)"
+				if [ "${hname}" != "(none)" ] && [ "${hname}" != "localhost" ]; then
+					args="${args} --hostname='${hname}'"
+				fi
+			fi
+			;;
+	esac
+
+	# delay until carrier is up
+	ip link set "${IFACE}" up
+	ip link show "${IFACE}" | grep NO-CARRIER &> /dev/null
+	while [ "$?" != "1" ]; do
+	    sleep 1
+	    ip link show "${IFACE}" | grep NO-CARRIER &> /dev/null
+	done
+
+	eval "${x}" "${args}" -r `cat /etc/firewall/tmp/OLDEXTIP` \
+		-n -i "${IFACE}" -u "ndhc" -C "/var/lib/ndhc" \
+		-p "${pidfile}" >/dev/null
+	eend $? || return 1
+
+	_show_address
+	return 0
+}
+
+ndhc_stop()
+{
+	local pidfile="/var/lib/ndhc/var/run/ndhc-${IFACE}.pid" opts=
+	[ ! -f "${pidfile}" ] && return 0
+
+	# Get our options
+	eval opts=\$dhcp_${IFVAR}
+	[ -z "${opts}" ] && opts=${dhcp}
+
+	ebegin "Stopping ndhc on ${IFACE}"
+	case " ${opts} " in
+		*" release "*)
+			start-stop-daemon --stop --quiet --oknodo --signal USR2 \
+				--exec /sbin/ndhc --pidfile "${pidfile}"
+			;;
+	esac
+
+	start-stop-daemon --stop --exec /sbin/ndhc --pidfile "${pidfile}"
+	eend $?
+}